Improvement properties of laser cladding Ni45-Cr₃C₂ coatings by adding B₄C and V

Abstract

By adding B4C and vanadium to Ni45-Cr3C2 powder in a moderate proportion, it is found that B4C will decompose into elements B and C during laser cladding, and the lattice constants of V and Cr elements are similar, which can form (Cr,V)B2 phase with high hardness. According to the first principles calculation of the hardness of (CR1-XVx)B, it can be seen that it shows a trend of increasing first and then decreasing. With the addition of B4C and vanadium, the mechanical properties of the composite coating increase. When the coating composition is Ni45-30Cr3C2-9B4C-15FeV50, the average microhardness, fracture toughness and wear resistance of the composite coating increase by 22.1%, 121.6% and 54.2%, respectively. Highlights Laser cladding composite coatings with different B4C and vanadium were prepared. V and Cr elements have similar lattice constants and can form a (Cr, V)B2 phase with high hardness. The performance of the laser cladding composite coatings increased with the addition of B4C and vanadium.

Laser cladding powder flow field detection system based on ISR optimization algorithm

“…The following are relevant literature on new materials for cladding processes. Liu Y. et al showed that the average micro-hardness, fracture toughness, and wear resistance of the composite coating increased by 22.1 %, 121.6 %, and 54.2 %, respectively, by adding appropriate amounts of B4C and vanadium to the powder [16]. Wilms M et al demonstrated the capability of producing iron-based oxide dispersion-strengthened composite materials by utilizing advanced directional energy deposition technology with high-speed LC.…”